Reflected Power Calculator

↳

Electronics

Chemical Engineering

Civil

Electrical

Electronics and Instrumentation

Materials Science

Mechanical

Production Engineering

⤿

Fiber Optic Parameters

C-V Actions of Optics Transmission

Optical Detectors

Transmission Measurements

✖Incident Power w.r.t optics is the amount of optical power (light energy) incident on the photodetector.ⓘ Incident Power [P_o]			+10% -10%
✖The Refractive Index of Core is defined as how the light travels through that medium. It defines how much a light ray can bend when it enters from one medium to the other.ⓘ Refractive Index of Core [η_core]			+10% -10%
✖Refractive Index of Air is the refractive index of a vacuum.ⓘ Refractive Index of Air [n_air]			+10% -10%

✖Reflected Power of the Fiber is a measure of the power of the signal that is reflected back.ⓘ Reflected Power [P_refl]

⎘ Copy

👎

Formula

✖

Reflected Power

Formula

`"P"_{"refl"} = "P"_{"o"}*(("η"_{"core"}-"n"_{"air"})/("η"_{"core"}+"n"_{"air"}))^2`

Example

`"0.035947µW"="1.75µW"*(("1.335"-"1.0003")/("1.335"+"1.0003"))^2`

Calculator

LaTeX

Reset

👍

Download Electronics Formula PDF PDF Image

Reflected Power Solution

STEP 0: Pre-Calculation Summary

Formula Used

Reflected Power of the Fiber = Incident Power*((Refractive Index of Core-Refractive Index of Air)/(Refractive Index of Core+Refractive Index of Air))^2
P_refl = P_o*((η_core-n_air)/(η_core+n_air))^2
This formula uses 4 Variables

Variables Used

Reflected Power of the Fiber - (Measured in Watt) - Reflected Power of the Fiber is a measure of the power of the signal that is reflected back.
Incident Power - (Measured in Watt) - Incident Power w.r.t optics is the amount of optical power (light energy) incident on the photodetector.
Refractive Index of Core - The Refractive Index of Core is defined as how the light travels through that medium. It defines how much a light ray can bend when it enters from one medium to the other.
Refractive Index of Air - Refractive Index of Air is the refractive index of a vacuum.

STEP 1: Convert Input(s) to Base Unit

Incident Power: 1.75 Microwatt --> 1.75E-06 Watt (Check conversion here)
Refractive Index of Core: 1.335 --> No Conversion Required
Refractive Index of Air: 1.0003 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

P_refl = P_o*((η_core-n_air)/(η_core+n_air))^2 --> 1.75E-06*((1.335-1.0003)/(1.335+1.0003))^2

Evaluating ... ...

P_refl = 3.59471211015862E-08

STEP 3: Convert Result to Output's Unit

3.59471211015862E-08 Watt -->0.0359471211015862 Microwatt (Check conversion here)

FINAL ANSWER

0.0359471211015862 ≈ 0.035947 Microwatt <-- Reflected Power of the Fiber

(Calculation completed in 00.004 seconds)

You are here -

Home » Engineering » Electronics » Fiber Optic Transmission » Fiber Optic Parameters » Reflected Power

Credits

Created by Vaidehi Singh

Prabhat Engineering College (P.E.C.), Uttar Pradesh

Vaidehi Singh has created this Calculator and 25+ more calculators!

Verified by Priyanka Patel

Lalbhai Dalpatbhai College of engineering (LDCE), Ahmedabad

Priyanka Patel has verified this Calculator and 10+ more calculators!

< 10+ Fiber Optic Parameters Calculators

Total System Rise Time

Go Total System Rise Time = sqrt(Transmitter Rise Time^2+Modal Dispersion Time^2+Fiber Rise Time^2+Pulse Spreading Time^2+Receiver Rise Time^2)

Power Penalty Arising from Chromatic Dispersion

Go Chromatic Dispersion Power Penalty in dB = -5*log10(1-(4*Bit Rate*Length of Optical Fiber*Chromatic Dispersion Coefficient*Free Spectral Range Wavelength)^2)

Reflected Power

Go Reflected Power of the Fiber = Incident Power*((Refractive Index of Core-Refractive Index of Air)/(Refractive Index of Core+Refractive Index of Air))^2

Refractive Index of Material Given Optical Power

Go Refractive Index of Core = Ordinary Refractive Index+Non Linear Index Coefficient*(Incident Optical Power/Effective Area)

Carrier to Noise Ratio

Go Carrier to Noise Ratio = Carrier Power/(The Relative Intensity Noise (RIN) power+Shot Noise Power+Thermal Noise Power)

Maximum Nominal Channel Power

Go Maximum Nominal Channel Power in dB = Class 3A Laser Output Power in dB-10*log10(Wavelength Division Multiplexing Channels)

Total Dispersion

Go Dispersion = sqrt(Fiber Rise Time^2+Pulse Spreading Time^2+Modal Dispersion Time^2)

Fourth Intermodulation Product in Four Wave Mixing

Go Intermodulation Product = First Frequency+Second Frequency-Third Frequency

Fiber Length Given Time Difference

Go Fiber Length = ([c]*Time Difference)/(2*Refractive Index of Core)

Number of Mixing Products in Four Wave Mixing

Go Number of Mixing Products = Number of Frequencies^2/2*(Number of Frequencies-1)

Reflected Power Formula

What is the significance of Reflected Power of the Fiber?

High levels of reflected power can degrade the quality of the transmitted signal. This is because the reflected signal can interfere with the forward-traveling signal, causing distortions. The reflected power can affect the performance of the system, particularly in high-speed digital systems and analog video systems. The reflected power is an indication of how well the transmission line (or fiber) is matched to its load. A good match, meaning the reflected power is low, ensures maximum power transfer and minimal signal degradation.

How to Calculate Reflected Power?

Reflected Power calculator uses Reflected Power of the Fiber = Incident Power*((Refractive Index of Core-Refractive Index of Air)/(Refractive Index of Core+Refractive Index of Air))^2 to calculate the Reflected Power of the Fiber, The reflected power of the fiber is a measure of the power of the signal that is reflected back towards the source due to discontinuities or impedance mismatches in the optical fiber. Reflected Power of the Fiber is denoted by P_refl symbol.

How to calculate Reflected Power using this online calculator? To use this online calculator for Reflected Power, enter Incident Power (P_o), Refractive Index of Core (η_core) & Refractive Index of Air (n_air) and hit the calculate button. Here is how the Reflected Power calculation can be explained with given input values -> 35947.12 = 1.75E-06*((1.335-1.0003)/(1.335+1.0003))^2.

FAQ

What is Reflected Power?

The reflected power of the fiber is a measure of the power of the signal that is reflected back towards the source due to discontinuities or impedance mismatches in the optical fiber and is represented as P_refl = P_o*((η_core-n_air)/(η_core+n_air))^2 or Reflected Power of the Fiber = Incident Power*((Refractive Index of Core-Refractive Index of Air)/(Refractive Index of Core+Refractive Index of Air))^2. Incident Power w.r.t optics is the amount of optical power (light energy) incident on the photodetector, The Refractive Index of Core is defined as how the light travels through that medium. It defines how much a light ray can bend when it enters from one medium to the other & Refractive Index of Air is the refractive index of a vacuum.

How to calculate Reflected Power?

The reflected power of the fiber is a measure of the power of the signal that is reflected back towards the source due to discontinuities or impedance mismatches in the optical fiber is calculated using Reflected Power of the Fiber = Incident Power*((Refractive Index of Core-Refractive Index of Air)/(Refractive Index of Core+Refractive Index of Air))^2. To calculate Reflected Power, you need Incident Power (P_o), Refractive Index of Core (η_core) & Refractive Index of Air (n_air). With our tool, you need to enter the respective value for Incident Power, Refractive Index of Core & Refractive Index of Air and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

Home

FREE PDFs

🔍 Search